Indulge your chocolate cravings with this Thermomix recipe for Chocolate Tāngyuán. The dough is made by mixing glutinous rice flour with cocoa powder, giving it a rich chocolatey flavor and a deep brown color. Fill the dough with your favorite chocolate fillings, such as Nutella or chocolate ganache, and cook them in boiling water. The combination of the sticky rice balls and the luscious chocolate filling creates a decadent dessert that will satisfy any chocolate lover.